Choosing an FCCU CO promoter is no longer driven by NO

Fluidized catalytic cracking units (FCCUs) form coke during the reaction that combusts in the regenerator and supplies heat for the process.

Fluidized catalytic cracking units (FCCUs) form coke during the reaction that combusts in the regenerator and supplies heat for the process. The reactions can be full combustion to carbon dioxide (CO2) and water or partial combustion to carbon monoxide (CO) and water emissions. CO can further combust to CO2. An FCCU may utilize CO promoter additives to catalyze these reactions to: Meet environmental regulations on CO emissions
Reduce afterburn, which occurs when CO and oxygen react in the dilute phase (or less commonly the flue gas line) of the regenerator. In the dilute phase, there is less catalyst to absorb the heat of combustion, potentially causing significant temperature increases abo

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